The correct answer is They felt it hadn't gone far enough to help the country
Macroeconomic model makers finally discovered what Henry Hazlitt and John T. Flynn (among others) had known since the 1930s: Franklin Delano Roosevelt's New Deal (FDR) lengthened and deepened the Great Depression. It is a myth that FDR "took us out of the Depression" and "saved capitalism from itself," as generations of Americans (and, consequently, the rest of the world) have been taught in all state educational institutions.